JPH0438506Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a coil winding device that forms a coil by winding a magnet wire so as to wrap it around a pair of winding frames extending in the axial direction.

[Technical background of the invention] A conventional example of this type of coil winding device will be explained with reference to FIG. Reference numeral 1 denotes a substrate, which is supported so as to be rotated by a rotational drive mechanism (not shown). Reference numerals 2 and 3 denote a pair of winding frames whose base ends are supported by the substrate 1, and both winding frames 2 and 3 extend in parallel in the axial direction (horizontal direction in the figure). Then, the outer sides of both the winding frames 2 and 3 are arranged such that the winding diameter of the magnet wire that is wound so as to span both the winding frames 2 and 3 gradually decreases toward the tip side (right side in the figure). The surface portion is formed into a stepped shape to form the magnet wire winding portion 2.
Three each of a and 3a are provided. Thus, each magnet wire winding portion 2a, 3a is parallel to the rotation center line A.

When winding the coil 4 using the coil winding device configured as described above, both the winding frames 2 and 3 are rotated by the rotational drive mechanism, and the magnification is increased per rotation of both the winding frames 2 and 3. The wire feeding device (not shown) sends the magnet wire by the outer diameter dimension to the tip side of the winding frames 2 and 3, thereby moving the magnet wire from the base end of the winding frames 2 and 3 to the tip. The coil 4 is formed by winding it once toward the side.

[Problems in the Background Art] However, in the above conventional configuration, the coil 4 is
Due to heavy winding, if the required number of turns of the coil 4 is secured, the total length (axial dimension) of the winding frames 2 and 3 will be reduced.
This results in the following drawbacks: After forming the coil 4, the coil 4 is transferred to the blade 5a by inserting the blade 5a of the coil transfer device 5 into the defective groove 2b in one of the winding frames 2, but the total length of the winding frame 2 is In addition to being long, the blade 5a is also longer, which makes it difficult to align the groove 2b of the winding frame 2 and the blade 5a, resulting in poor workability for transferring the coil 4. Moreover,
The overall length of the winding frames 2 and 3 is long, which is disadvantageous in terms of strength, and the overall weight is also heavy, making it unsuitable for increasing the winding speed.

The above-mentioned drawbacks can be overcome by winding the coil twice around the winding frame, which reduces the overall length of the winding frame to approximately half of the conventional length. However, in the conventional configuration described above, it was impossible to double-wound the coil for the following reasons. That is, since the magnet wire winding parts 2a and 3a of both winding frames 2 and 3 are both parallel to the rotation center line A, the magnet wire in the middle of winding is connected to the magnet wire winding part 2.
a, 3a are easily slid in the axial direction. For this reason, even if you try to double-wrap the first layer of magnet wire, it will shift in the axial direction due to the tightening force of the second layer of magnet wire that is wound on top of it, and in the end, the double-layered magnet wire will move. I couldn't wrap it. In order to solve such technical problems, in recent years,
The magnet wire winding portion of one winding frame body is formed into a slope shape that widens toward the tip of the winding frame body, and this slope-shaped magnet wire winding portion prevents the magnet wire from slipping. It has been considered to restrict the winding of the magnet wire to enable double winding of the magnet wire.

However, even in this case, there remains an unsolved problem that the magnet wire tends to slip off from the tip of the flat magnet wire winding portion of the other winding frame at the final stage of the coil winding process.

[Purpose of the invention] The invention was made in consideration of the above circumstances.
Therefore, the purpose of this is to be able to double-wrap the magnet wire around the winding frame in an aligned state, and also to prevent the magnet wire from slipping off from the tip of the winding part of the magnet wire, thereby reducing the overall length of the winding frame. It is an object of the present invention to provide a coil winding device that can shorten the length of the coil, improve workability of transferring the coil, and increase the winding speed.

[Summary of the invention] The invention provides a plurality of magnets in which the outer side surfaces of both winding frames are formed in a stepped shape so that the winding diameter of the magnet wire gradually decreases toward the distal end side of the winding frame. In a device provided with a wire winding portion, each magnet wire winding portion of one winding frame is formed into a slope shape that widens toward the distal end side of the winding frame,
A protrusion for preventing the magnet wire from slipping off is formed at the tip of each magnet wire winding part of the other winding frame, and a protrusion is formed between each magnet wire winding part of the one winding frame. The stepped portion is located closer to the proximal end than that of the other winding frame.

According to this configuration, the sloped magnet wire winding portion of one winding frame restricts the shifting movement of the magnet wire, thereby making it possible to double wind the magnet wire. The protrusion formed at the tip of each magnet wire winding portion of the other winding frame prevents the magnet wire from slipping off.
This allows the magnet wire to be wound twice in an aligned state until the end. In addition, the stepped portion between each magnet wire winding portion of one winding frame (the winding frame having an inclined surface) is located closer to the proximal end than that of the other winding frame. Therefore, when the magnet wire is jumped from the completed magnet wire winding part to the next magnet wire winding part, the loosened part of the magnet wire will fall onto the stepped part of one winding frame. It is possible to prevent getting caught and to perform the jumping motion smoothly.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to FIGS. 1 to 6. First, in FIG. 6 showing the overall configuration, 11 is a winding machine main body, and a disk-shaped base plate 12 is rotatably provided on the side surface of this main body.
This substrate 12 is configured to be rotated at high speed by a rotational drive mechanism (not shown) within the winding machine main body 11. Reference numerals 13 and 14 denote a pair of winding frames, a first winding frame body and a second winding frame body, which extend in the axial direction (perpendicular direction to the substrate 12). 12, and the second winding frame body 14 has its base end formed in slide grooves 15, 15 formed in the base plate 12.
It is supported so that it can slide along. Reference numeral 16 denotes a clamp provided on the substrate 12, with which the tip of the magnet wire 17a is fixed. Reference numeral 18 denotes a wire feeding device for feeding the magnet wire 17a sequentially from the base end to the distal end side of both the winding frames 13 and 14 when the magnet wire 17a is wound. The feed shaft 19 extends to
and a guide roller 20 etc. that is slid in the axial direction by the rotation of this feed shaft 19, and the magnet wire 17a is moved by this guide roller 20.
will be guided. Reference numeral 21 denotes a storage container that houses the magnet wire 17a.

Now, as shown in FIG.
The outer side surfaces of both the winding frames 13 and 14 are formed into a stepped shape so that the winding diameter of the magnet wire 17a wound around the magnet wire 17a gradually decreases toward the distal ends of the winding frames 13 and 14. Then, three magnet wire winding parts 13, 13b, 13c and 14a, 14b,
14c is provided. Each magnet wire winding portion 1 of the second winding frame body 14, which is one winding frame body,
4a, 14b, and 14c are formed in the shape of a slope that widens toward the distal end side of the second winding frame body 14. In this case, the slope of each magnet wire winding portion 14a, 14b, 14c with respect to the rotation center line A is
It is set to 3° or more. Further, the first winding frame body 13, which is the other winding frame body, has a coil 17 at the tip of each magnet wire winding portion 13a, 13b, 13c.
A protrusion 22 for preventing slippage is integrally molded. The protrusion height of each protrusion 22 is about the same as the outer diameter of the magnet wire 17a. Furthermore, each magnet wire winding portion 14a of the second winding frame 14,
The position of the stepped portion between 14b and 14c is set to be located on the base end side (on the left side in the figure) by a predetermined distance ΔL (see FIG. 2) from that of the first winding frame 13. In this case, ΔL is 1 of both winding frames 13 and 14.
This is approximately 1 to 2 times the amount of movement of the guide roller 20 per rotation (the amount of feed of the magnet wire 17). On the other hand, a coil transfer device 23 is attached to the first winding frame 13.
A pair of grooves 24 for inserting the blade 23a of
(See Figures 2 and 3). still,
In FIGS. 1 and 2, 25 is a cylinder device provided on the back side of the base plate 12, which allows the second winding frame 14 to be moved in parallel in the vertical direction in the figure, and between the two winding frames 13 and 14. The interval between is now changing.

Next, the operation of the above configuration will be explained. To wind and form the coil 17, first, as shown in FIG.
8 through the guide roller 20 of the clamping device 16
Fixed to. Then, the rotation drive mechanism of the winding machine main body 11 rotates both the winding frames 13 and 14 at high speed, and the feed shaft 19 is rotated in synchronization with this to rotate the guide roller 20 between the winding frames 13 and 14.
Slide it sequentially from the proximal end side to the distal end side. In this case, the amount of movement of the guide roller 20 per rotation of both the winding frames 13 and 14, ie, the amount of feed of the magnet wire 17a, is 1/2 the outer diameter of the magnet wire 17a. Thus, the magnet wire winding portions 14a, 14b, 14c of the second winding frame 14
is formed in the shape of a slope that widens toward the distal end of the second winding frame 14, so that the component of the winding force is applied to the magnet wire 17a toward the proximal end (left side in the figure) due to the slope of the slope. Start working towards. When the slope is set to 3° or more as in this embodiment, the magnitude of the component force is at least (tan3°=0.05) times the winding force. As a result of such a component force acting, when the magnet wire 17a starts winding from the position indicated by S as shown in FIG. 4, the magnet wire 17a shifts toward the proximal end on the magnet wire winding portion 14a. The first turn of the movement comes into contact with the base end of the magnet wire winding portion 14a, and further displacement is restricted. In this way, at the beginning of winding, the magnet wire 17
Because a slides around, the first few turns are not double wound but single wound, but one of both winding frames 13 and 14
Since the amount of feed of the magnet wire 17a per rotation is 1/2 of the outer diameter of the magnet wire 17a, the amount of deviation of the magnet wire 17a decreases with each turn, and after winding several turns, The amount of displacement becomes almost zero. The magnet wire 17a to be wound subsequently is prevented from shifting toward the proximal end by the already wound magnet wire 17a, and the magnet wire winding portion 14
Since the slope of a prevents the magnet wire 17 from shifting toward the tip side, as shown in FIG.
A is surely wound twice. When the magnet wire 17a has been wound to a predetermined number of turns, the rotation of both winding frames 13 and 14 is once decelerated or stopped, and in this state, the feed shaft 19 is rotated to wind the magnet wire 17a to the next magnet. Net wire winding part 1
Send to 4b side. (Hereinafter referred to as "leap motion"). In this way, when the rotation of both winding frames 13 and 14 is temporarily decelerated or stopped to perform a jumping operation, the magnet wire 17a becomes temporarily loosened during the jumping operation. For this reason, if each magnet wire winding portion 14a, 14b, 14c of the second winding frame 14
Assuming that the axial position of the stepped portion between them is aligned with that of the first winding frame 13, the loosened portion of the magnet wire 17a may catch on the stepped portion of the second winding frame 14 during the jumping operation. There is a risk that the leap action will not be performed reliably. However, in this embodiment, each magnet wire winding portion 14 of the second winding frame 14
Since the position of the stepped portion between a, 14b, and 14c is set to be located closer to the proximal end than that of the first winding frame 13, the loosened portion of the magnet wire 17a is It is possible to prevent the winding frame 14 from getting caught on the stepped portion of the second winding frame 14, and to perform the jumping motion reliably. After the jumping operation, the coil 17 is formed by repeating the winding of the magnet wire 17a as described above. In this embodiment, a protrusion 22 for preventing the coil 17 from slipping off is integrally molded at the tip of each magnet wire winding part 13a, 13b, 13c of the first winding frame 13. The protrusions 22 can reliably prevent the coil 17 from slipping off the tip of the magnet wire winding portions 13a, 13b, and 13c during winding.

On the other hand, the coil 1 formed by winding as described above
7 to the blade 23a of the coil transfer device 23, the blade 23a is transferred to the first winding frame body 1.
3 into the groove 24, and the cylinder device 25
to move the second winding frame 14 to the first winding frame 1.
3, thereby holding both the winding frames 13, 1 with the coil 17 sandwiched between the blades 23a.
This is extracted from 4. In this case, the protrusion 22
Since the height of the protrusion is as small as the outer diameter of the magnet wire 17a, the protrusion 22 does not interfere with the transfer work of the coil 17.

According to the above embodiment, the magnet wire winding portions 14a, 14b, and 14c of the second winding frame 14 are formed in a slope shape that widens toward the distal end side of the second winding frame 14, thereby creating a slope. Because of the slope, the magnet wire 17a can be prevented from slipping and can be wound twice. Moreover, since the protrusions 22 are formed at the tips of the magnet wire winding parts 13a, 13b, and 13c of the first winding frame 13, each magnet wire winding can be completed at the final stage of the coil winding process. Rotating part 13a, 1
Magnet wire 17 from the tips of 3b and 13c
It is possible to reliably prevent the wires 17a from slipping down by the projections 22, and together with the above-mentioned circumstances, it is possible to double-wrap the magnet wires 17a in an aligned state until the end. Therefore, the total length of both winding frames 13 and 14 can be reduced to about half of the conventional length, and the total length of the blade 23a of the coil transfer device 23 can also be reduced to about half of the conventional length. As a result, when the coil 17 is transferred, the groove 24 of the first winding frame 13
The positioning of the coil 17 and the blade 23a becomes easy, and the workability of transferring the coil 17 is improved. Moreover, since the overall length of both winding frames 13 and 14 is shortened, both winding frames 1
This is advantageous in terms of supporting strength of the coils 3 and 14, and the overall weight is reduced, so that the winding speed of the coil 17 can be increased. In addition, since the overall length of the blade 23a of the coil transfer device 23 is shortened, the blade 23a when transferring the coil 17 from the blade 23a to the coil insertion device (not shown)
The positioning of the coil 17 is also facilitated, and the workability of transferring the coil 17 to the coil insertion device is also improved.

In the above embodiment, the protrusion 22 is formed in the portion between the grooves 24, 24 of the first winding frame 13, but for example, the protrusion 22 is formed in the portion outside the grooves 24, 24 (the third
It may also be formed on both the left and right sides in the figure. Further, in the above embodiment, both winding frames 13, 1
4, the second winding frame body 1
Although the configuration is such that only the winding frame bodies 13 and 14 are slid, the present invention is not limited to this, and a configuration may be adopted in which both the winding frames 13 and 14 are slid at the same time. Further, in the above embodiment, one magnet wire 17a is wound around both winding frames 13 and 14, but for example, a plurality of magnet wires can be wound around both winding frames 13 and 14 at the same time.
3 and 14, and in this case, the feed amount of the magnet wire per rotation of both the winding frames 13 and 14 is set to 1 of the total outer diameter of the plurality of magnet wires. /2 allows double winding.

[Effects of the invention] In the present invention, the magnet wire winding portion of one winding frame is formed into a slope shape that widens toward the tip of the winding frame, so that the slope is This makes it possible to prevent the magnet wire from shifting and make double winding possible. Moreover, since the projections are formed at the tips of each magnet wire winding part of the other winding frame, the magnet can be removed from the tip of each magnet wire winding part at the final stage of the coil winding process. It is possible to reliably prevent the wire from slipping down by each protrusion, and in combination with the above-mentioned circumstances, it is possible to double-wrap the magnet wire in an aligned state until the end. Therefore, the total length of both winding frames can be reduced to about half of the conventional length.
As a result, the overall length of the blade of the coil transfer device can be reduced to approximately half of that of the conventional coil transfer device, and the efficiency of coil transfer work is improved. Moreover, since the overall length of both winding frames is shortened, this is advantageous in terms of support strength of both winding frames, and the overall weight is reduced, which is advantageous in that the winding speed of the coil can be increased. It has a great effect. In addition, the stepped portion between each magnet wire winding portion of one winding frame (the winding frame having an inclined surface) is located closer to the proximal end than that of the other winding frame. Therefore, during the jumping operation, it is possible to prevent the loose part of the magnet wire from getting caught in the step part of one of the winding frames, and the excellent effect is achieved that the jumping operation can be performed smoothly.

[Brief explanation of the drawing]

Figures 1 to 6 show an embodiment of the present invention, in which Figure 1 is a vertical sectional front view of the entire magnet wire after winding, Figure 2 is a front view of the entire magnet wire, and Figure 3 is a front view of the entire magnet wire. The same side view, FIGS. 4 and 5 are longitudinal sectional front views of main parts shown in different states to explain the operation, FIG. 6 is a perspective view of the entire winding machine, and FIG. 7 is a conventional example. FIG. In the drawing, 13 is a first winding frame (the other winding frame),
13a, 13b and 13c are magnet wire winding parts, 14 is a second winding frame (one winding frame), 1
4a, 14b and 14c are magnet wire winding parts, 17 is a coil, 17a is a magnet wire,
22 is a protrusion.

Claims (1)

[Scope of utility model registration request] A coil is formed by winding a magnet wire across a pair of winding frames extending in the axial direction, and the outer side surfaces of both winding frames are formed into a stepped shape to form a coil. In a device provided with a plurality of magnet wire winding portions whose winding diameters gradually decrease toward the distal end side of the winding frame, each magnet wire winding portion of one winding frame is connected to the winding frame. The magnet wire is formed into a slope shape that widens toward the tip side, and a protrusion for preventing the magnet wire from slipping off is formed at the tip of each magnet wire winding portion of the other winding frame, and further . A coil winding device, characterized in that the stepped portion between the magnet wire winding portions of the one winding frame is located closer to the proximal end than that of the other winding frame.